Adapted to Corrade changes.

src/MagnumPlugins/AnyAudioImporter/Test/Test.cpp

@@ -80,7 +80,7 @@ void AnyImporterTest::ogg() {
 
 void AnyImporterTest::unknown() {
     std::ostringstream output;
-    Error::setOutput(&output);
+    Error redirectError{&output};
 
     AnyImporter importer{_manager};
     CORRADE_VERIFY(!importer.openFile("sound.mid"));

src/MagnumPlugins/AnyImageConverter/Test/Test.cpp

@@ -79,7 +79,7 @@ void AnyImageConverterTest::png() {
 
 void AnyImageConverterTest::unknown() {
     std::ostringstream output;
-    Error::setOutput(&output);
+    Error redirectError{&output};
 
     AnyImageConverter converter{_manager};
     CORRADE_VERIFY(!converter.exportToFile(Image, "image.xcf"));

src/MagnumPlugins/AnyImageImporter/Test/Test.cpp

@@ -97,7 +97,7 @@ void AnyImageImporterTest::png() {
 
 void AnyImageImporterTest::unknown() {
     std::ostringstream output;
-    Error::setOutput(&output);
+    Error redirectError{&output};
 
     AnyImageImporter importer{_manager};
     CORRADE_VERIFY(!importer.openFile("image.xcf"));

src/MagnumPlugins/AnySceneImporter/Test/Test.cpp

@@ -82,7 +82,7 @@ void AnySceneImporterTest::ply() {
 
 void AnySceneImporterTest::unknown() {
     std::ostringstream output;
-    Error::setOutput(&output);
+    Error redirectError{&output};
 
     AnySceneImporter importer{_manager};
     CORRADE_VERIFY(!importer.openFile("mesh.stl"));